Hi there,

after many reboots I finally fixed an error in a driver but I am not sure if there ain't an underlying problem which causes this error.

The initialization is done with

struct snd_pcm *pcm; int err;

if((err = snd_pcm_new(chip->pod->line6.card, (char *)chip->pod->line6.devname, 0, 1, 1, &pcm)) < 0) return err;

pcm->private_data = chip; pcm->private_free = pod_cleanup_pcm; chip->pcm = pcm;

However in hw_param, substream->private_data is NULL and I have to get the right value with this construct:

static int snd_pod_capture_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) { int ret; struct snd_pod_pcm *chip = snd_pcm_substream_chip(substream);

/* -- Florian Demski [FD] */ /* don't ask me why, but this fixes the bug on my machine */ if ( chip == NULL ) { if ( substream->pcm == NULL ) return -ENOMEM; if ( substream->pcm->private_data == NULL ) return -ENOMEM; substream->private_data = substream->pcm->private_data; chip = snd_pcm_substream_chip( substream ); } /* -- [FD] end */

Somehow only my machine produces this error, I tried switching off SMP and PREEMPT, but with no other result.

Or is this possibly an (undocumented) feature in alsa?

I'd be happy if actually some of you experienced guys might take a look at that driver:

SVN https://line6linux.svn.sourceforge.net/svnroot/line6linux/driver/trunk

Browse https://line6linux.svn.sourceforge.net/viewvc/line6linux/driver/trunk/

Thanks in advance,

Florian